Electric snap-switch.



0. E. KENNEY.

ELECTRIC SNAP SWITCH.

APPLICATION FILED JUNE 30.1916.

1,199,992. Patented Oct. 3,1916.

Fig. 1. Fig. 2.

INVEN TUE.

- labor and manufacture over the cam mem- UNITED sTATEs PATENT oFFIoE.

OWEN E. KENNEY, 0F TOLEDO, OHIO, ASSIGNOB TO THE YOST ELECTRIC MANUFAC- TUBING COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

' ELECTRIC SNAP-SWITCH.

Application a... June so, 1916. Serial No. 106,790.

To all whom it may concern Be 'it known that I, OWEN E. KENNEY,

a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of-Ohio, have invented a certain new and erence marked thereon, which form a part of this specification.

This invention relates to electric snap switches and particularly to those of the key controlled type in which a 'cam member is rotated 'to effect a making and breaking of the switch circuit.-

The object of my invention is the provision in a switch of the class described of an improved cam member which is simple and cheap in its construction and capable of being easily andquickly made whereby to effect a material saving in expense, material,

'mounted thereon, and Fig. 4 is a side ele vation of the key with the cam member and bearing parts in section.

Referring to the drawings, 1 designates a key shaft of an electric switch of the key controlled type commonly used in connection with electric sockets. It is common in this class of switches to mount a cam-member on the key shaft for limited rotary movements relative thereto to permit the contact parts to have quick circuit breaking movements even though the key beheld stationary after being turned to the releasing point, as is well understood in the art.

In the present case the cam member. of the switch, which member is designated 2,

I i is mounted for free limited rotation on the Specification of Letters Patent.

Patented Oct. 3, 1916.

shaft 1 and has its rotation relative to the shaft limited by a set -of'diametrically opposed lugs 3 onthe shaft, coacting with the lnturned ends of the leg portions of the cammember. The shaft lugs 3' may be formed thereon in any suitable manner as for instance by pinching together or compressing portlons of the shaft metal at opposite sides of its axis.

The cam-member comprises a short, narrow, flat bar or strip of metal having an openlng 5 therethrough centrally of its ends and of its side edges for rotatably fitting the key shaft 1, and also having its opposite end portions bent in the same direction in parallel relation to the shaft, as shown at 6,

and in the pathof rotation of the shaft lugs 3 whereby said lugs and said portions 7 coact to permit the cam member to have only limited rotary movements with respect to the shaft for the purpose well understood in the art. I

The bar from which the cam member 2 is made preferably comprises a flattened wire with the edges thereof rounded so that rounded instead of sharp edges on'the leg portions 6 of the member are presented to and have contact with the spring circuit.

bearing collar, which are loosely mounted on the shaft 1 at opposite sides of the cam member 2 and' rest in respective seats provided therefor in the switch carrying insulating body 11, as is'common in switches of this type.

It wish not limited to any specific construction, arrangement or form of the parts except in so far as such limitations are specified in the claims. 1

Having thus described my invention; what I claim as new, and desire to secure by Letters Patent, is,

'1. A cam member of the class described formed in U-shape with its crown provided it understood that niy invention is j with a central opening and with the free ends of its legs turned inward toward the axis of the opening.

\2. In an electric switch of the class described, a rotatable control shaft havingopposed lngs on a part thereof, and a cam member rotatably mounted on the Shaft adjacent to said lugs, said ca'm member com prising bar metal formed in U-shape length- 10 wise thereof and-having its crown provided with a central opening for 'rotatablfy receiving said shaft and also having the ee ends of its legs turned inward toward the shaft and intermediate said lugs to coact therewith to limit the relative rotary movements of the cam member and shaft.

In testimony whereof, I have hereunto signed my name to this specification.

I OWEN- TE.- KENNEY. 

